Improvement in lubricators



0. A. ROLLINS. Lubrioator.

No. 222,739. Patented Dec. I6, 1879? ATTORNEYS.

UNrrn TATES PATENT OFFICE,

osoaa A. ROLLINS, on GAMPELLO, MASSACHUSETTS.

IMPROVEMENT IN LUBRICATORS I Specification forming part of Letters Patent No. 222,739, dated December 16, 1879; application filed October 31, 1879.

To all whom it may concern:

spoudin g parts.

This invention relates to that class of oilpumps that are designed for supplying oil for lubricating purposes to steam-engine cylinders.

In the drawings, A represents the pumpcylinder, having in its lower head, B, two holes, a a, to which the pipes b I) (shown in dotted lines, Fig. 1) are to be connected. Both of these pipes are to be provided with cocks, and one pipe is to connect with an oilbarrel or other reservoir, and the other with the steam-cylinder of the engine.

0 represents the upper head of the cylinder, on which is a central boss orshoulder, f, whose vertical bore 0 is provided with a screw thread, which thus makes, in effect, a nut of the said boss f; and D is a gear-wheel, whose socket d fits loosely over the shoulder for the cylinderhead G.

The'screw piston-rod E is passed centrally down into the cylinder A, through the cylinder-head C and the gear-wheel D, and carries on its lower end the piston F, and on its top the hand-wheel G.

The wheel D has no screw-thread cut in its bore, but is held to the piston-rod E by the key H, that is set in the keyway g of the wheel D itself, and in the longitudinal slot h, that extends the entire length of the screw on the rod E, sothat when the wheel D' is turned it carries the said piston-rod E around, screws it up or down in the cylinder'head 0, remaining itself, however, in the same level.

K is a standard secured on the cylinderhead O, and supporting two pillow-blocks, L, that afford hearings to the worm-shaft M, on which is the worm N. On the outer end of this worm-shaft is fixed the ratchet-wheel 0- To the upward'proiecting arm 1? of the standard K is pivoted the slotted arm Q, adjustabeen screwed down as far as possible,.and it is desired to fill the cylinder A, the cock on of the oil-supply pipe b is opened, and the cock m of the pipe 1;, connecting with the enginecylinder, is closed, when the key H is removed from the gear-wheel D, and the piston-rod E is turned by means of the hand-wheel Gr until the piston F has reached the top of the cylinder A, in doing which it draws up oil from the reservoir into the said cylinder A. Then the cock m is closed, and the cock on of' the pipe b, connecting with the engine-cylinder, is opened. The key H is then restored to its primary position to hold the gear-wheel D and the piston-rod E together. The pawl R is then allowed to engage with the teeth of the ratchet-wheel 0'. Then, if power be applied through the connectingrod S,.a reciprocating motion is imparted to the pawl R, which motion is transmitted, through ratchetwheel 0, shaft M, and worm N, to the gearwheel D, and thence to the piston-rod and piston E F, so that the latter, being forced down at every stroke of the engine to which the pump is connected, ejects at each stroke a quantity of oil from the cylinder A through the pipe b. r

The quantity of oil ejected at each stroke of the engine or downward movement of the piston F is regulated by adjusting the pawlpin 75 in the slot of the arm Q, for the higher up the said pin 7c is fixed in the arm Q the greater will be the leverage and sweep of the pawl R, and, consequently, the greater will be the extent of the "motion it will transmit to the piston B through the ratchet-wheel O, and the greater, therefore, will be the displacement of oil by the said piston F at each stroke; while, on the other hand, the lower the pin it" is set, the shorter will be the sweep worm M N ratchet-wheel O, pawl R 5in k, of the pawl R, and the less the consequent moarm Q, and connecting-rod S, substantially as tion of the piston F. and for the purpose described.

Havin thus fully described my invention I claim is new and desire to secure by Let OSCAR ALGENON ROLLINS' ters Patent- Witnesses:

The standard K, provided with arm P, in JONAs It. PERKINS, combination with the cylinder A, shaft and DAVID L. GORVELL. 

